Still passable says MUA
A mains water pipe has burst in the south of the Island, Manx Utilities has confirmed.
Engineers are on site at Grenaby Road repairing the leak.
The route is an access road for the Southern 100 - with the Billown Circuit set to close in under an hour's time (9.45am).
It is said to be 'passable with care'.
Mountain Road to remain shut overnight
Route has been subject to repairs at Brandywell Corner
Manx veteran killed in Ukraine repatriated to Island
Chris Garrett's remains have been escorted home to Peel
Brace for 'a tricky fortnight', says weatherman
Weather set to take a turn this afternoon
Income Support services moved online
Claimants need to register with Isle of Man Government Online Services
Committee chair says Tynwald 'has accepted a lower standard of debate'
Calls for chief minister to withdraw 'unacceptable' remarks failed to gain support